Through late April, the highest tritium[3] level – nearly 50 times government limits – was in a well in the Cohansey aquifer beneath the plant. The Cohansey is used for drinking water beyond Oyster Creek property lines.

A different well in the shallower Cape May aquifer beneath Oyster Creek had a tritium level that was about 45 times above government limits. The state Department of Environmental Protection has posted a map of well locations[4].

Plant and DEP officials have indicated that tritium from several pipe leaks last year has not been detected off-site.